Brinyte M37 mini LED flashlight uses one CREE XR-E Q5 LED and can reach max 300 lumens output. This EDC flashlight is powered by one AAA battery with max 10 hours run time.Head rotary switch design, it’s easy to operate. IP68 standard waterproof features , Brinyte M37 is one of your best choice as a flashlight keychain for outdoor and daily life lighting. Custom service for mode, package and accessories are available.